Insomniate - Insomniate is a highly lightweight application that keeps your PC from going into Sleep/Standby mode.
Strokeit - StrokeIt is an advanced mouse gesture recognition engine and command processor.
Caffeinated - Caffeinated is a clone of a comparative Mac OSX apparatus called Caffeine and stops your PC going into standby.
Gesturefy - Customizable mouse gesture addon, which supports over 40 different actions. Features:
Caffeine for Windows - Prevent your computer from going to sleep
StrokesPlus.net - Mouse Gestures and More for Windows